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i.MX31: fixed CTRL-C detection

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The Register URXD contains status information in bits [15..8].
With status bit 15 set, CTRL-C was reported as 0x8003 instead
of 0x03. Therefore CTRL-C was not detected.
To solve this, bits [15..8] were masked out now.

Signed-off-by: Juergen Kilb <J.Kilb@gmx.de>
Acked-by: Felix Radensky <felix@embedded-sol.com>
This commit is contained in:
Juergen Kilb 2008-06-08 17:59:53 +02:00 committed by Wolfgang Denk
parent b571afde02
commit d92ea21baf
1 changed files with 2 additions and 1 deletions
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3
cpu/arm1136/mx31/serial.c
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@ -63,6 +63,7 @@
#define URXD_FRMERR (1<<12)
#define URXD_BRK (1<<11)
#define URXD_PRERR (1<<10)
#define URXD_RX_DATA (0xFF)
#define UCR1_ADEN (1<<15) /* Auto dectect interrupt */
#define UCR1_ADBR (1<<14) /* Auto detect baud rate */
#define UCR1_TRDYEN (1<<13) /* Transmitter ready interrupt enable */
@ -165,7 +166,7 @@ void serial_setbrg (void)
int serial_getc (void)
{
while (__REG(UART_PHYS + UTS) & UTS_RXEMPTY);
return __REG(UART_PHYS + URXD);
return (__REG(UART_PHYS + URXD) & URXD_RX_DATA); /* mask out status from upper word */
}
void serial_putc (const char c)